The form's action is just a simple mailto: command. Put the email address that the form should send to here.

enctype="text/plain" makes the form more readable as plain text in an email.

Be warned that when a user hits the submit button on this form he will be prompted with something like below:

"This form is being submitted using e-mail.
Submitting this form will reveal your e-mail address to the recipient, and will send the form data without encrypting it for privacy.
You may continue or cancel this submission."